Allow subjects to be delegated locally

[raniejade]

In Kotlin 1.1 subjects can't be delegated locally, there is a compile error.

object MySpec: SubjectSpek<Foo>({
    val subject by subject { ... }
})

The issue is caused by how LifecycleAware is implemented (this also means that using memoized causes the same issue).

interface LifecycleAware<T>: ReadOnlyProperty<LifecycleAware<T>, T>

It should be declared as

interface LifecycleAware<T>: ReadOnlyProperty<Any, T>